diff --git a/tools/Makefile.am b/tools/Makefile.am
index a443202..36691d4 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -7,7 +7,7 @@ AM_CPPFLAGS = \
 	$(xml_CFLAGS) \
 	-I$(top_srcdir)/include \
 	-I$(top_builddir)/include \
-  -Wall
+	-Wall
 
 if CROSS_COMPILING
 libdbus_cxx_la = $(BUILD_LIBDBUS_CXX_DIR)/src/libdbus-c++-1.la